Glue applicator



p 1942- A. J. MATTER 2,296,861

GLUE APPLICATOR Filed Aug. 8, 1940 as 05 INVENITOE:

Patented Sept. 29, 1942 @umrso STATES PATENT OFFICE own arrmca'ron Albert an Matter, ms Ridge, 111., assignor of rone haif to Edward B. Fallon, Chicago, 111.

Application August 8,1940, Serial No. 351,828

Claims. (01. 91-49) This invention relates to devices for applying glue from a glue receptacle to the material to be glued and has for its object to provide means Fig.5 illustrates the form oi slit in the end of anip'ple.

In the drawing, like reference numerals indicate similar parts throughout the several views.

Referring to Figs. 1 and 2, i indicates a glue tank having oriflced guide strips 2 and 3 for the sliding reception oi plungers 5. Belowthe plungers and in co-axial alignment therewith are Another object is to provide a number of glue outlets in the receptacle which may be adjusted separately to provide various ounts of glue through the several outlets.

A further object is to provide means for quickly making inoperative one or more of a number of glue outlets without disturbing the setting, regulating the amounts oi glue dispensed.

I attain these objects by means of the mechanism shown in the attached drawings in which I provide a glue receptacle having flexible rubber nipples projecting through the bottom thereof,

said nipples, having sm seli closing vslits through their bottoms and being recessed for the reception of oscillating plungers adapted to iorce measured quantities or glue from the receptacle through the nipple slits and onto wipers or rolls or directly onto the object to be glued.

A rocker shalt carrying adjustable screws provides adjustable operational the plunger-s, and

its operation on 1?. In. plunger may be made ineflective by removing caps provided on the upper ends of the plungers.

Evaporation of contents'oi the glue receptacle is prevented by appl to the surface of the glue, a layer or liquid lighter than glue.

Details of construction are hereinafter more fully described 01 illustrated in the accompany-= ing drawing in whioh=- Fig. 1 i a secti elevation of a glue tanlr provided with nipples, pioneers and operating mechanism, taken on line l -l Fig. 2.

Fig. 2 shows a sectionalelevation of the tanlr and parts shown in Fig. l, on e II-Ii, showing method of applying glue to wipers operating to spread glue on object to be'glued.

Fig. 3 shows a sectio elevation through provided with exteon nozzles to which nipples are attached so as in increase the amount of glue ejected in one plunger stroke when applying glue by means or a transfer roll.

Fig. i shows a modified form oi slitted rubber nozzle end his in place oi the nipples.

provided orifices 6 in the bottom of tank I for the reception of nipples i having round bottomed cylindrical recesses 8 adapted to receive the ends of plungers 5 and provided with flanged heads 9 and annular ribs IQ for retaining the nipples in place when, forced into orifices 5. ii indicates a small slit provided in the bottom of each nipple to provide a self-closing opening through which glue may be forced by the plungers. it designates the glue and i3 indicates a layer of liquid lighter than glue and adapted to float thereon and prevent evaporation thereof, such as oil for instance.

Bearings it are shown attached to tank i but may be otherwise supported for the purpose of carrying a rocker shalt it having extension arm Y iii provided with adjustable screws ii and lock nuts i8 located so as to engage plunger caps i9 which are recessed to fit removably on the tops of the plungers.

Rocker shaft 15 is provided with anoperating lever 26 which may be operated by a cam, eccentric or other mechanism or by hand.

In order to permit a charge of glue to enter nipple recesses Bit is necessary to raise the bottoms of the plungers above the nipple as shown in Fig. 2. This is preferably accomplished by means of springs as at El surrounding plungers 5 and seated on guide strip 2 so as to apply upward pressure against washers 22 and cross pin 23 carried by plungers ii.

Other means for operating the plungers may be employed.

In operation rocker shalt it with extension arm it is slightly rotated in bearings it so that screws i? press against plunger caps it and force which the medium of wipers as shown at 24 Figs. 1

and 2'. Wipers 24 are pivotally attached at 25 towiper brackets 28 which in turn are attached to wipenshaft 21 by screws 2|. Shaft I! is rotatably mounted in bearings 30 and provided with a pulley 30 or other driving connection geared in time with the movements of rocker shaftib. Springs 8| mounted between wipers 2d and brackets 28 in conjunction with hook 82 carried by wiper 26 provide limited resilient movement of the wipers across the face of' the object to which the glue is applied as at it. If

desired the spring tension may be made ad-' Justable or applied in any other manner.

A indicates a drop of glue which has been deposited on wiper 26. Rotary movement of the wipers is preferably intermittent allowing the wipers-to stand still in the position shown in Fig. 2 when the plungers are forcing the glue on them.

The wipers may act to wipe the glue onto objects indicated at 33 while such object is standing still or rotating. in either direction at any speed, slower, faster or the same as the wipers, depending on the kind of wipe desired. 33 may also represent a transfer roller for transmitting glue to the object to be glued.

The use of a series of individual wipers for each nipple is desirable'as it permits removal of those under idle plungers and also allows for irregularities on the surface of the object to be lued.

When it is desired to apply the glue in a continous strip this is best accomplished with a transfer roller and continuous feeding of glue sufficient for the full strip as shown in Fig. 3 in IA represents a glue tank having an extension nozzle 34, plunger 5, nipple I and a nipple connector 35 which is shown threaded to engage threads provided on nozzle 33. This allows a longer continuous stroke of plunger b which may be operated in the same manner as shown in Figs. 1 and 2 or the plunger may be operated by means of a cam or crank to provide a longer stroke. 36 indicates a transfer roller mounted on a rotatable shaft 31. 38 is an idler roller mounted on rotatable shaft 39 and held against roller with sufiicient pressure to spread the glue lib on roller onto a sheet of paper or other material 48 passing between the rollers.

It will be noted that when glue is forced out through slit il in nipple I the edges of 'the slit open outwardly, but as soon as the plunger stops the resilient rubber closes the slit and pinches oil the glue as at 120. This is accentuated by indicates the disc provided with a slit 42.

It is understood that modifications may be made in the specific construction shown without departing from the spirit of the inventio What is claimed is:

1. A glue applicator comprising a glue receptacle, a cup shaped nipple of rubber or like material attached thereto and having aslit in the bottom and a plunger associated therewith for squeezing glue or like material through said slit.

2. A glue applicator comprising aglue receptacle, a cup shaped nipple of elastic material attached thereto and having a self-closing slit therein and a plunger associated therewith so as to enter said nipple, close off a measured quantity of glue therein and squeeze said glue through said slit.

3. A glue applicator comprising a glue receptacle having a nomle, elastic material closing one end of said nozzle and having a self-closing slit therein and a plunger fitting in the other end of said nozzle adapted to squeeze glue or like material in said nozzle through said slit.

4. A glue applicator comprising a glue receptacle having a nozzle, a cup shaped nipple attached to the outer end of said nozzle and having a self-closing slit and a plunger adapted to enter the inner end of said nozzle, close-off glue therein and force it through said slit and then retract so as to permit the slit to close.

5. A glue applicator comprising a glue rece tacle having an elastic section containing a selfclosing slit and means for forcing glue under pressure through said slit, said means comprising a cylindricalportion with a plunger therein.

6. A glue applicator comprising a glue receptacle, an elastic cup-shaped nipple having ahemispherical end connected therewith and having a self-closing slit in said hemispherical end and means for forcing glue or like material through said slit.

I. A glue applicator comprising a glue receptacle, a plurality of cup shaped elastic nipples hav ing slits in their bottoms and connected with said receptacle, plungers adapted to reciprocate into and out of said nipples, actuating means for pressing said plungers into said nipples and spacers removably held between said plungers and plunger actuating means.

8. A glue applicator comprising a glue receptacle having flexible self closing slits therein, means for ejecting glue through said slits in said receptacle, and separate wipers adapted to receive the glue ejected through said slits and wi it onto the article to be glued.

9. A glue applicator comprising a glue receptacle, a cup shaped nipple of rubber or like material attached therto and having a slit in the bottom and a plunger associated therewith forsqueezing glue or like material through said slit,

and wipers adapted to receive the glue ejected wipe it onto the article to 'tached thereto and. having a self-closing slit therein and a plunger associated therewith so as to enter said nipple, close off a measured quantity of glue therein and squeeze said glue through said slit, and wipers adapted to receive the glue ejected through said slits and wipe it onto the article to be glued.

11. A glue applicator comprising a glue receptacle having a nozzle, elastic material closing one end of said nozzle andhaving a self-closing slit therein and a plunger fitting in the other end of said nozzle adapted to squeeze glue or like material in said nozzle through said slit, and wipers adapted to receive the glue ejected through said slits and-wipe it onto the artlcleto be glued.

12. A glue applicator comprising a glue receptacle having an elastic section containing a selfclosing slit and means for forcing glue under pressure through said slit, and wipers adapted to receive the glue ejected through said slits and wipe it onto the article to be glued.

13. A glue applicator comprising a glue receptacle, an elastic nipple connected therewith and having a self-closing slit and means for forcing glue or like material through said slit, and wipers adapted to receive the glue ejected through said slits and wipe it onto the article to be glued.

14. A glue applicator comprising a glue receptacle, a plurality of cup shaped elastic nipples having slits in their bottoms and connected with said receptacle, plungers adapted to reciprocate into and out of said nipples, actuating means for pressing said plungers into said nipples and spacers removably held between said plungers and plunger actuating means, and wipers adapted to receive th glue ejected through said slits and wipe it onto the article to be glued.

15. A glue applicator, comprising a glue receptacle, a cup shaped nipple of elastic material atit to the object tobe glued.

16. A glue applicator comprising a glue recep tacle having a nozzle, elastic material closing one end of said nozzle and having a self-closing slit therein and a plunger fitting in the other'end of tached thereto and having a self-closing slit' said nozzle adapted to squeeze glue or like material in said nozzle through said slit, and a transfer roller adapted to receive the glue ejected through said slits and transfer it to the object to be glued.

17. A glue applicator comprising a glue receptacle having an elastic section containing a selfclosing slit and means for forcing glue under pressure through said slit, and a transfer roller adapted to receive the glue ejected through said slits and transfer it to the object to be glued.

18. A glue applicator comprising a glue receptacle, means for ejecting glue therefrom and wipers resiliently mounted so as to receive said ejected glue and apply it to the object to be glued.

19. A glue applicator comprising a glue source and wipers connected therewith, said wipers being resiliently mounted on a rotatable shaft and adapted to receive glue from the glue source and wipe it onto an object to be glued.

20. A glue applicator comprising a glue tank, means for ejecting glue through the bottom of the tank and a liquid lighter than glue adapted to float on said glue and prevent its evaporation.

ALBERT JOHN MATTER.

the glue ejected through said slits and transfer 

